227k views
4 votes
9+(3b + 8)=(3b + 8)+9

2 Answers

4 votes
9+3b+8=3b+8+9

0=0

solution set=R
User TocToc
by
8.4k points
3 votes

9+(3b + 8)=(3b + 8)+9\\ 9+3b+8=3b+8+9\\ 0=0\\ b\in\mathbb{R}
User Sanjay Uttam
by
8.6k points